December Weather in Big Bear Lake, United States

Last updated: February 24, 2025

Experience the charm of Big Bear Lake in December, where winter magic unravels against a backdrop of breathtaking scenery. During this month, temperatures oscillate from a maximum of 22°C (71°F) to a chilly minimum of -7°C (19°F), creating a dynamic climate perfect for a variety of outdoor activities. With an average temperature of 7°C (46°F), visitors can enjoy crisp, invigorating air. December brings about 45 mm (1.8 in) of precipitation over 4 days, offering a serene atmosphere enhanced by a humidity level of 75%. Embrace the freshness of the season as you indulge in the beauty of Big Bear Lake during this festive period.

December Temperature in Big Bear Lake

In December, Big Bear Lake experiences a notable drop in temperatures as winter sets in, with a minimum reaching -7°C (19°F), which sets a chilly backdrop for the holiday season. The average temperature hovers around 7°C (46°F), providing a brisk environment that's perfect for winter activities. Daytime highs can rise to 22°C (71°F), offering a brief respite from the cold. This month showcases a clear trend toward cooler weather compared to the preceding months, as temperatures decline significantly from the milder averages seen in autumn. The transition into winter is evident, making December a captivating time to enjoy the beauty of the winter landscape in this serene mountain retreat.

December Weather in Big Bear Lake: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Big Bear Lake, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454649576172777771615345
Data source: Temperature data for Big Bear Lake generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Big Bear Lake

In December, Big Bear Lake experiences a notable surge in precipitation, with 45 mm (1.8 in) falling over the course of four days. This amount is among the highest of the year, closely trailing only January and February, which demonstrate similar wet conditions. The month sets the stage for the winter season, reviving the landscape with fresh moisture and contributing to the area's snowpack. Following a relatively dry summer, December’s precipitation marks a transition, hinting at the vital role of winter storms in shaping the region’s climate and ecosystem. As the year draws to a close, these precipitation patterns underscore the onset of winter, rejuvenating both the environment and the recreational activities that rely on a snowy backdrop.

December Precipitation Trends in Big Bear Lake

The chart displays monthly precipitation patterns in Big Bear Lake, with values for each month alongside December's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec4446422114529191291645
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Big Bear Lake

In Big Bear Lake, December sees a humidity level of 75%, marking a notable increase from the summer months when humidity dipped to a low of just 28% in August. As winter approaches, the air tends to hold more moisture, with January kicking off the year at 76%. This trend of rising humidity is juxtaposed against the dry summer conditions, showcasing a shift towards a more moist environment as the year comes to a close. November, with 68% humidity, sets the stage for December's uptick, indicating a gradual return to the higher humidity levels characteristic of early winter. Overall, the data reflects a clear seasonal pattern, where Big Bear Lake transitions from warm, dry summers to the cooler, more humid months of winter.

December Average Humidity in Big Bear Lake

This chart illustrates the average monthly humidity levels in Big Bear Lake, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec76%80%69%57%45%34%29%28%42%54%68%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Big Bear Lake

As the year winds down, December in Big Bear Lake sees a decline in UV exposure, with a moderate UV Index of 4 and a burn time of 30 minutes. This gentle reprieve follows several months of extreme and very high UV levels from April through August, where sun safety became a priority with burn times shrinking to just 10 minutes. Compared to November's moderate UV Index of 5, December offers a slight relaxation in sun intensity, bringing back more leisurely sunbathing opportunities. While winter is approaching, those spending time outdoors should still be mindful of UV rays, as even low indices can lead to skin damage with prolonged exposure. For more detailed insights about UV levels throughout the year, check out Big Bear Lake UV Index.

Maximum UV Index Levels in Big Bear Lake for December

The chart shows the monthly maximum UV Index (UVI) for Big Bear Lake in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec469111112121110854
Data source: Big Bear Lake December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

December Sunshine in Big Bear Lake

December in Big Bear Lake brings a cozy transition into winter, with 228 hours of sunshine illuminating the snowy landscape. While this month sees shorter days compared to the summer peak—with July basking in a robust 383 hours—it still offers a charming array of sunlit moments for visitors and residents alike. Following the vibrant autumn months, which boast a notable 322 hours in September and 299 hours in October, December's sunlight gradually begins to taper off, preparing the region for its serene winter backdrop. Despite the dip, the presence of sun amidst the snow creates a breathtaking contrast, inviting all to appreciate the unique beauty of this season in the mountains.

Monthly Sunshine Duration in Big Bear Lake: December Highlighted

The December sunshine duration represents the total number of hours Big Bear Lake experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec190h244h295h328h370h379h383h363h322h299h258h228h
Data source: Big Bear Lake December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Big Bear Lake During December

When considering the likelihood of sunny weather in December at Big Bear Lake, a notable trend emerges: the chances of sunshine drop fairly significantly, reaching 51%. This decline contrasts sharply with the sunnier months preceding it, where the chances peak at 88% in September and remain robust into November at 77%. As the year winds down, the shift from the higher probabilities of sun during the warmer months illustrates a seasonal transition, positioning December as one of the cloudier times of year in this scenic region. Thus, while December may offer picturesque winter landscapes, sunshine seekers might want to temper their expectations.

Percentage of Sunny Days in December in Big Bear Lake

The chart illustrates the percentage of sunny days in Big Bear Lake throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Big Bear Lake experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec62%72%70%72%85%71%56%82%88%73%77%51%
Data source: Big Bear Lake December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Big Bear Lake in December

As the year winds down in Big Bear Lake, December brings about a notable shift in daylight duration, with the sun gracing the skies for only 9 hours. This reduction reflects a broader trend observed from the summer months, where daylight peaks at 14 hours in June and July, gradually tapering off as the seasons change. Autumn ushers in shorter days, and by November, daylight declines to 10 hours before reaching its annual low in December. Following this pattern, the daylight hours are set to start lengthening again with the arrival of January, indicating a rejuvenating cycle as the days inch closer to spring. The rhythmic ebb and flow of light throughout the year not only shapes the landscape but also influences the serene atmosphere that Big Bear Lake is famed for during the winter months.

Average Daylight Hours in Big Bear Lake for December

The chart illustrates the variation in daylight duration in Big Bear Lake throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 9m10h 57m11h 59m13h 3m13h 57m14h 23m14h 8m13h 21m12h 20m11h 16m10h 21m9h 53m
Data source: Big Bear Lake daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Big Bear Lake

In December, Big Bear Lake experiences a gentle breeze with an average wind speed of 2.1 m/s (5 mph), continuing the trend of calm conditions characteristic of the winter months. As the year draws to a close, wind speeds gradually decline from the more dynamic springtime averages, peaking at 2.5 m/s (6 mph) in April. This subtle shift underscores the serene atmosphere of the region during the holiday season, inviting locals and visitors alike to enjoy crisp, tranquil days amidst the stunning snowy landscapes. Overall, December's winds mirror the mild breezes felt throughout late autumn, offering a peaceful respite before winter fully settles in.

Average December Wind Speed in Big Bear Lake

The chart displays monthly wind speed patterns in Big Bear Lake, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec2.32.22.42.52.42.22.02.12.02.12.02.1 m/s
Data source: Big Bear Lake December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Big Bear Lake Compares to Other Months

The weather in Big Bear Lake changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Big Bear Lake and find detailed weather information for every month.

In December, temperatures range from a minimum of -7°C (19°F) to a maximum of 22°C (71°F), with an average temperature of 7°C (46°F). The month experiences approximately 45 mm (1.8 in) of precipitation over four days, with humidity levels around 75%. Comparatively, January shows a similar temperature range, maintaining the same minimum and maximum temperatures, with an average still at 7°C (46°F) and a slightly warmer maximum of 72°F. Precipitation in January is slightly lower at 44 mm (1.7 in), with humidity rising to 76%. Overall, both months exhibit consistent weather patterns, making them nearly indistinguishable in terms of temperature and moisture. For more insights, you can check Big Bear Lake weather in January.

In December, temperatures in Big Bear Lake range from a chilly minimum of -7°C (19°F) to a pleasant maximum of 22°C (71°F), with an average temperature of 7°C (46°F). December typically sees about 45 mm (1.8 inches) of precipitation over four days, with humidity levels sitting at 75%.

By February, the weather characteristics are quite similar, with a minimum of -5°C (23°F) and a maximum of 22°C (72°F), resulting in an average temperature of 8°C (46°F). Precipitation slightly increases to 46 mm (1.8 inches) over five days and humidity rises to 80%.

Overall, both months exhibit mild temperatures, but February tends to be a bit wetter and more humid. For more detailed information, check out Big Bear Lake weather in February.

When comparing the weather in December and March, we see notable differences in temperature and precipitation patterns. December experiences colder temperatures with a minimum of -7°C (19°F) and an average of 7°C (46°F), while March sees a slightly milder minimum of -4°C (25°F) and an average of 9°C (49°F). In December, the maximum temperature can reach up to 22°C (71°F), compared to March’s higher maximum of 27°C (81°F). Precipitation levels are quite similar, with December receiving 45 mm (1.8 in) over 4 days and March slightly less at 42 mm (1.6 in) across 7 days, leading to marginally higher humidity in December at 75% compared to 69% in March. For more details on the weather trends, you can check out Big Bear Lake weather in March.

When comparing December and April weather in Big Bear Lake, distinct contrasts emerge. December features a chilly range with temperatures dipping as low as -7°C (19°F) and averaging around 7°C (46°F), alongside higher humidity levels at 75%. The month experiences about 45 mm (1.8 in) of precipitation over four days, fostering a wintry atmosphere. In contrast, April brings a more temperate climate with minimum temperatures of 0°C (32°F) and an average of 14°C (57°F), peaking at a warm 30°C (86°F). This month is noticeably drier, with only 21 mm (0.8 in) of precipitation over just two days, and lower humidity at 57%. For a detailed look at what to expect, check out Big Bear Lake weather in April.

December and May present stark contrasts in weather conditions. In December, temperatures can dip as low as -7°C (19°F) and reach an average of 7°C (46°F), with maximums hitting 22°C (71°F). This month also sees a higher average humidity of 75% and more precipitation, with 45 mm (1.8 in) falling over about 4 days. In contrast, May boasts milder temperatures with a minimum of 1°C (33°F) and a comfortable average of 16°C (61°F), peaking at a warm 33°C (92°F). Precipitation is significantly reduced, totaling just 14 mm (0.6 in) over 3 days, and humidity drops to a more pleasant 45%. For more detailed insights into the weather, check out Big Bear Lake weather in May.

December and June showcase stark contrasts in weather conditions. December experiences a wide temperature range with minimums dropping to -7°C (19°F) while averaging around 7°C (46°F), peaking at 22°C (71°F). This month also has a higher humidity level at 75% and sees precipitation on about four days, accumulating to 45 mm (1.8 in). In contrast, June boasts a warmer climate, with minimum temperatures of 7°C (45°F) and averages hitting 22°C (72°F), soaring to highs of 37°C (99°F). This month is significantly drier, with only 5 mm (0.2 in) of precipitation occurring over just one day and maintains a much lower humidity level of 34%. For more detailed information, you can check out Big Bear Lake weather in June.

The weather in December and July presents a striking contrast in terms of temperature and humidity. December experiences chilly temperatures with a minimum of -7°C (19°F) and an average of 7°C (46°F), while July enjoys much warmer conditions, starting at a minimum of 11°C (52°F) and averaging 25°C (77°F). Additionally, July can reach highs of 38°C (101°F), whereas December peaks at a milder 22°C (71°F). Precipitation is slightly more frequent in July, occurring over six days compared to December's four days, but the overall rainfall in July is less at 29 mm (1.1 in) compared to December's 45 mm (1.8 in). The humidity levels also differ significantly, with December being more humid at 75%, while July's humidity drops to a comfortable 29%. For a deeper look into July's weather, check out Big Bear Lake weather in July.

When comparing the weather in December and August, it's clear that the two months exhibit stark contrasts. December experiences colder temperatures, with a minimum of -7°C (19°F) and an average of 7°C (46°F), while August enjoys much warmer conditions, featuring temperatures that range from a minimum of 12°C (55°F) to a scorching maximum of 37°C (98°F). Precipitation also varies, with December receiving 45 mm (1.8 in) over four days, compared to August's much lighter 19 mm (0.8 in) spread across five days. Additionally, humidity levels are significantly different: December's average humidity sits at 75%, creating a chillier atmosphere, whereas August has a much drier feel with only 28% humidity. For more on what to expect during this warm month, check out Big Bear Lake weather in August.

The weather in December is notably colder than in September, with temperatures ranging from a chilly minimum of -7°C (19°F) to a comfortable average of 7°C (46°F), and a maximum of 22°C (71°F). In contrast, September boasts much warmer conditions, with minimum temperatures of 7°C (44°F) and maximums soaring up to 39°C (102°F). Precipitation levels also differ significantly; December experiences 45 mm (1.8 in) over four days, while September is much drier, with just 12 mm (0.5 in) over two days. Additionally, humidity in December is higher at 75%, compared to the more comfortable 41% found in September. For more detailed insights, check out Big Bear Lake weather in September.

December weather in Big Bear Lake is notably colder than October, with temperatures ranging from a chilly -7°C (19°F) at night to a mild 22°C (71°F) during the day, compared to October’s more comfortable range of 2°C (36°F) to a warm 33°C (92°F). Additionally, December experiences more precipitation, averaging 45 mm over four days, whereas October sees significantly less, with only 8 mm of rain across just one day. Humidity also increases in December, averaging around 75%, compared to October's lower 54%. For more specific information about October weather, you can check out Big Bear Lake weather in October.

In December, temperatures in Big Bear Lake show a notable drop compared to November, with minimums reaching -7°C (19°F) and average highs around 7°C (46°F). In contrast, November enjoys milder conditions, featuring a minimum of -3°C (27°F) and average highs peaking at 12°C (54°F). Precipitation also varies; December experiences an increase in rainfall with 45 mm (1.8 in) over four days, while November has just 16 mm (0.6 in) spread over two days. Additionally, humidity is slightly higher in December at 75%, compared to November's 68%. For more detailed insights about November weather, check out Big Bear Lake weather in November.

Compare Big Bear Lake's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Big Bear Lake

As December unfolds in Big Bear Lake, the weather reveals a unique charm that sets it apart from other months. The crisp, cool air, characterized by a noticeable drop in temperatures, creates a cozy atmosphere perfect for holiday festivities. With average temperatures hovering around 7°C (46°F) and occasional highs touching 22°C (71°F), residents and visitors alike can enjoy a range of outdoor activities, from winter sports to leisurely strolls. The month also sees a modest amount of precipitation, contributing to the region's stunning winter landscapes, while an average humidity of 75% adds to the seasonal ambiance. For those eager to learn more about how December compares with the rest of the year, dive deeper into the details of the region's climate at Big Bear Lake Climate.